D. X = 10
6x-20= 40
6x=40+20
6x=60
X=10
When grading papers you can convert decimals into percents
.91 times 4000=3640 people prefer Pedro’s
4000-3640= 360 people prefer other brands
In mixed form, It is write as: Quotient Remainder / Divisor
So, compare it with 2 1/2
Quotient = 2
In short, Your Answer would be 2
Hope this helps!